wininet/tests: Don't crash on W2K and below.
[wine] / dlls / hhctrl.ocx / hhctrl.c
1 /*
2  * hhctrl implementation
3  *
4  * Copyright 2004 Krzysztof Foltman
5  * Copyright 2007 Jacek Caban for CodeWeavers
6  *
7  * This library is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * This library is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with this library; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20  */
21
22 #include "wine/debug.h"
23
24 #define INIT_GUID
25 #include "hhctrl.h"
26
27 WINE_DEFAULT_DEBUG_CHANNEL(htmlhelp);
28
29 HINSTANCE hhctrl_hinstance;
30 BOOL hh_process = FALSE;
31
32 BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD fdwReason, LPVOID lpvReserved)
33 {
34     TRACE("(%p,%d,%p)\n", hInstance, fdwReason, lpvReserved);
35
36     switch (fdwReason)
37     {
38     case DLL_PROCESS_ATTACH:
39         hhctrl_hinstance = hInstance;
40         DisableThreadLibraryCalls(hInstance);
41         break;
42     case DLL_PROCESS_DETACH:
43         break;
44     }
45     return TRUE;
46 }
47
48 static const char *command_to_string(UINT command)
49 {
50 #define X(x) case x: return #x
51     switch (command)
52     {
53         X( HH_DISPLAY_TOPIC );
54         X( HH_DISPLAY_TOC );
55         X( HH_DISPLAY_INDEX );
56         X( HH_DISPLAY_SEARCH );
57         X( HH_SET_WIN_TYPE );
58         X( HH_GET_WIN_TYPE );
59         X( HH_GET_WIN_HANDLE );
60         X( HH_ENUM_INFO_TYPE );
61         X( HH_SET_INFO_TYPE );
62         X( HH_SYNC );
63         X( HH_RESERVED1 );
64         X( HH_RESERVED2 );
65         X( HH_RESERVED3 );
66         X( HH_KEYWORD_LOOKUP );
67         X( HH_DISPLAY_TEXT_POPUP );
68         X( HH_HELP_CONTEXT );
69         X( HH_TP_HELP_CONTEXTMENU );
70         X( HH_TP_HELP_WM_HELP );
71         X( HH_CLOSE_ALL );
72         X( HH_ALINK_LOOKUP );
73         X( HH_GET_LAST_ERROR );
74         X( HH_ENUM_CATEGORY );
75         X( HH_ENUM_CATEGORY_IT );
76         X( HH_RESET_IT_FILTER );
77         X( HH_SET_INCLUSIVE_FILTER );
78         X( HH_SET_EXCLUSIVE_FILTER );
79         X( HH_INITIALIZE );
80         X( HH_UNINITIALIZE );
81         X( HH_SAFE_DISPLAY_TOPIC );
82         X( HH_PRETRANSLATEMESSAGE );
83         X( HH_SET_GLOBAL_PROPERTY );
84     default: return "???";
85     }
86 #undef X
87 }
88
89 /******************************************************************
90  *              HtmlHelpW (HHCTRL.OCX.15)
91  */
92 HWND WINAPI HtmlHelpW(HWND caller, LPCWSTR filename, UINT command, DWORD_PTR data)
93 {
94     TRACE("(%p, %s, command=%s, data=%lx)\n",
95           caller, debugstr_w( filename ),
96           command_to_string( command ), data);
97
98     switch (command)
99     {
100     case HH_DISPLAY_TOPIC:
101     case HH_DISPLAY_TOC:
102     case HH_DISPLAY_SEARCH:{
103         static const WCHAR delimW[] = {':',':',0};
104         HHInfo *info;
105         BOOL res;
106         WCHAR chm_file[MAX_PATH];
107         const WCHAR *index;
108
109         FIXME("Not all HH cases handled correctly\n");
110
111         if (!filename)
112             return NULL;
113
114         index = strstrW(filename, delimW);
115         if (index)
116         {
117             memcpy(chm_file, filename, (index-filename)*sizeof(WCHAR));
118             chm_file[index-filename] = 0;
119             filename = chm_file;
120             index += 2; /* advance beyond "::" for calling NavigateToChm() later */
121         }
122         else
123         {
124             if (command!=HH_DISPLAY_SEARCH) /* FIXME - use HH_FTS_QUERYW structure in data */
125                 index = (const WCHAR*)data;
126         }
127
128         info = CreateHelpViewer(filename);
129         if(!info)
130             return NULL;
131
132         if(!index)
133             index = info->WinType.pszFile;
134
135         res = NavigateToChm(info, info->pCHMInfo->szFile, index);
136         if(!res)
137         {
138             ReleaseHelpViewer(info);
139             return NULL;
140         }
141         return info->WinType.hwndHelp;
142     }
143     case HH_HELP_CONTEXT: {
144         HHInfo *info;
145         LPWSTR url;
146
147         if (!filename)
148             return NULL;
149
150         info = CreateHelpViewer(filename);
151         if(!info)
152             return NULL;
153
154         url = FindContextAlias(info->pCHMInfo, data);
155         if(!url)
156         {
157             ReleaseHelpViewer(info);
158             return NULL;
159         }
160
161         NavigateToUrl(info, url);
162         heap_free(url);
163         return info->WinType.hwndHelp;
164     }
165     case HH_PRETRANSLATEMESSAGE: {
166         static BOOL warned = FALSE;
167
168         if (!warned)
169         {
170             FIXME("HH_PRETRANSLATEMESSAGE unimplemented\n");
171             warned = TRUE;
172         }
173         return 0;
174     }
175     default:
176         FIXME("HH case %s not handled.\n", command_to_string( command ));
177     }
178
179     return 0;
180 }
181
182 /******************************************************************
183  *              HtmlHelpA (HHCTRL.OCX.14)
184  */
185 HWND WINAPI HtmlHelpA(HWND caller, LPCSTR filename, UINT command, DWORD_PTR data)
186 {
187     WCHAR *wfile = NULL, *wdata = NULL;
188     DWORD len;
189     HWND result;
190
191     if (filename)
192     {
193         len = MultiByteToWideChar( CP_ACP, 0, filename, -1, NULL, 0 );
194         wfile = heap_alloc(len*sizeof(WCHAR));
195         MultiByteToWideChar( CP_ACP, 0, filename, -1, wfile, len );
196     }
197
198     if (data)
199     {
200         switch(command)
201         {
202         case HH_ALINK_LOOKUP:
203         case HH_DISPLAY_SEARCH:
204         case HH_DISPLAY_TEXT_POPUP:
205         case HH_GET_LAST_ERROR:
206         case HH_GET_WIN_TYPE:
207         case HH_KEYWORD_LOOKUP:
208         case HH_SET_WIN_TYPE:
209         case HH_SYNC:
210             FIXME("structures not handled yet\n");
211             break;
212
213         case HH_DISPLAY_INDEX:
214         case HH_DISPLAY_TOPIC:
215         case HH_DISPLAY_TOC:
216         case HH_GET_WIN_HANDLE:
217         case HH_SAFE_DISPLAY_TOPIC:
218             len = MultiByteToWideChar( CP_ACP, 0, (const char*)data, -1, NULL, 0 );
219             wdata = heap_alloc(len*sizeof(WCHAR));
220             MultiByteToWideChar( CP_ACP, 0, (const char*)data, -1, wdata, len );
221             break;
222
223         case HH_CLOSE_ALL:
224         case HH_HELP_CONTEXT:
225         case HH_INITIALIZE:
226         case HH_PRETRANSLATEMESSAGE:
227         case HH_TP_HELP_CONTEXTMENU:
228         case HH_TP_HELP_WM_HELP:
229         case HH_UNINITIALIZE:
230             /* either scalar or pointer to scalar - do nothing */
231             break;
232
233         default:
234             FIXME("Unknown command: %s (%d)\n", command_to_string(command), command);
235             break;
236         }
237     }
238
239     result = HtmlHelpW( caller, wfile, command, wdata ? (DWORD_PTR)wdata : data );
240
241     heap_free(wfile);
242     heap_free(wdata);
243     return result;
244 }
245
246 /******************************************************************
247  *              doWinMain (HHCTRL.OCX.13)
248  */
249 int WINAPI doWinMain(HINSTANCE hInstance, LPSTR szCmdLine)
250 {
251     MSG msg;
252
253     hh_process = TRUE;
254
255     /* FIXME: Check szCmdLine for bad arguments */
256     HtmlHelpA(GetDesktopWindow(), szCmdLine, HH_DISPLAY_TOPIC, 0);
257
258     while (GetMessageW(&msg, 0, 0, 0))
259     {
260         TranslateMessage(&msg);
261         DispatchMessageW(&msg);
262     }
263
264     return 0;
265 }
266
267 /******************************************************************
268  *              DllGetClassObject (HHCTRL.OCX.@)
269  */
270 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
271 {
272     FIXME("(%s %s %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
273     return CLASS_E_CLASSNOTAVAILABLE;
274 }